Accupro 4500205 Solid Carbide Jobber Drill 8mm 140 Deg

Product Description

The ACCUPRO 4500205 is a solid carbide jobber-length drill bit engineered for demanding drilling applications in carbon fiber reinforced polymer (CFRP) materials. It carries a diamond coating, which substantially reduces wear and heat buildup when cutting abrasive composite workpieces. The bit measures 8.00 mm in diameter with an overall length of 91.00 mm (3.5827 inches) and a flute length of 53.00 mm (2.0866 inches). The 140-degree point angle is suited to minimize delamination and fiber tear-out in composite stacks. This bit is installed by aerospace fabricators, composite technicians, and precision machinists working with CFRP panels, laminates, and structural composite assemblies.

The 4500205 is sized for CFRP drilling operations where tool life and hole-wall quality are critical. Its straight cylindrical shank accepts standard drill chucks and collet holders sized for 8.00 mm shanks. The regular spiral, two-flute design promotes chip evacuation from abrasive composite material. This bit is a specialized-grade tool intended for production or maintenance drilling of carbon fiber components in aerospace, motorsport, and industrial composite fabrication environments.

Key Features

• Diamond coating extends tool life in abrasive CFRP and composite materials
• 140-degree proprietary point angle reduces delamination and fiber tear-out on entry and exit
• Solid carbide construction provides rigidity for tight-tolerance hole sizing
• Two-flute regular spiral geometry promotes chip clearance during composite drilling
• Straight cylindrical 8.00 mm shank fits standard chucks and collet systems
• 5xD flute-to-diameter ratio supports deeper hole drilling without regrind

Compatibility

Designed as a specialized OEM-style jobber drill for CFRP and composite material applications; fits any drill press, CNC machining center, or handheld drill with an 8.00 mm straight-shank collet or chuck.

Installation Notes

This drill bit is intended for use by machinists and composite fabrication technicians operating drill presses, milling machines, or CNC equipment. Ensure the spindle and workpiece are fully secured before engaging the tool. Coolant-through is not supported on this bit; dry cutting or external air blast is the typical approach for CFRP to avoid moisture contamination of the laminate. Inspect the cutting edges and diamond coating for wear regularly, as CFRP is highly abrasive and can degrade the cutting edge faster than metal substrates.